I'm the pickup's driver and I have to take your car/truck.¿ Машину легковую?

Also, in English, you can’t separate two full sentences with a comma - that’s called a run-on sentence. You need a semicolon (;) or a dash (—).

“I drive a pickup - I have to pick up your vehicle.”

You would use a semicolon if one were the reason for the other: “My car just broke down; I won’t be able to pick you up from school.”

“I’m a PICKUP truck driver” sounds like an occupation. We normally say “I drive a...”

If you google “I’m a pickup driver,” you get 2260 hits: https://www.google.com/search?sxsrf=ALeKk01gywDq8ybWU5XD4cr9CODy3fmRFw%3A1588006282618&ei=ig2nXoGSJczYtAWjppDQAw&q=%22I%27m+a+pickup+driver%22&oq=%22I%27m+a+pickup+driver%22&gs_lcp=CgZwc3ktYWIQAzIGCAAQCBAeOgQIABBHOgQIIxAnOgUIABCRAjoCCAA6BAgAEEM6BQgAEIMBOgYIABAHEB46BAgAEAo6CAgAEAgQBxAeOgQIABAeUOtTWKpsYMR3aABwAngAgAGHAYgB7A-SAQQ0LjE1mAEAoAEBqgEHZ3dzLXdpeg&sclient=psy-ab&ved=0ahUKEwiB_4CziInpAhVMLK0KHSMTBDoQ4dUDCAs&uact=5

If you google “I drive a pickup,” you get 236,000 hits: https://www.google.com/search?sxsrf=ALeKk00o64C26VtASoAK31h3yhHwddfLRw%3A1588006299342&ei=mw2nXq6-FJCqsgXklb7wAQ&q=%22I+drive+a+pickup%22&oq=%22I+drive+a+pickup%22&gs_lcp=CgZwc3ktYWIQAzIGCAAQBRAeMgYIABAFEB4yBggAEAUQHjIGCAAQBRAeMgYIABAIEB4yBggAEAgQHjIGCAAQCBAeOgQIIxAnOgUIABCRAjoECAAQQzoCCAA6BQgAEIMBOgcIABAUEIcCOgYIABAHEB46BAgAEAo6CAgAEAgQBxAeOggIABAHEAUQHlCGwgJYldECYJfYAmgAcAB4AIABugGIAawRkgEEMi4xNpgBAKABAaoBB2d3cy13aXo&sclient=psy-ab&ved=0ahUKEwju9_26iInpAhUQlawKHeSKDx4Q4dUDCAs&uact=5

Russ, are you going to do anything to fix your translation?